Withdrawing of piles, posts, and the like.



2 SHEETSSHEET 1 Patented Jan. 9, 1912.

APPLICATION FILED AUG.11, 1911.

A. GIBB,;T. G. MENZIES & R. GHALMERS. WITHDRAWING 0F FILES, POSTS, ANDTHE LIKE.

A. GIBB, T. G. MBNZIES & R. GH ALMERS. WITHDRAWING 0F FILES, POSTS, ANDTHE LIKE.

'APPLIQIATIQN FILBDAUG. 11. 1911.

1,014,295. v Patented Jan.9,-1912.

2 SHEETS-SHEBT 2f UNITED STATES PATENT OFFICE. I ALEXANDER. GIIBB, OFST. MARTINS ABBEY, TRON 1A8 MENZIES, OF NORTH QUEENSFERRY, ROBERTGHALMERS, OF NEWPQRT, SCOTLAND.

WITHDRAWING or PILES, POSTS, AND THE LIKE.

Specification of Letters Iatent. I

. Patented Jan. 9, 1912.

Application filed August 11, 1911. Serial No. 648,610.

To all whom it may concern:

Be it known that we, ALEXANDER GIBB, THOMAS GRAHAM MENZIES, and ROBERTCHALMERs, civil engineers, subjects of the provide apparatus forwithdrawing quickly and economically piles, posts, poles, and the likefromthe position into which they have been driven.

According to existing methods piles have to be pulled or prized fromtheir position necessitating a resistance or fulcrum against which toapply the re-action from the force used. In some cases so great a forceis necessary that owing to the absenceof a suitable resistance orfulcrum against which to work, such force is incapable of practicalapplication.

According to this invention an attachment is provided. for fixing to thepile which is to be withdrawn, WhlCh attachment is adapted to receivethe blows of a pneumatically or otherwise'operated hammer. The hammer isby preference separately supported, but it may be carried on the pileitself, either directly or by means of an attachment for that purpose,or-it may be carried on the same attachment which is adapted to receivethe blows of the hammer or it may be supported by a combination of thesemeans. Thus the only. resistance or fulcrum required is that necessaryto support the hammer and overcome the re-actlon from the blows, and theresistance necessary for this purpose is onlya fraction of what isrequired according to existing methods as described above. It is forthis reason that the hammer, sup orted directly or otherwise on the pileItself, and

' without any external support, will draw, or

partly draw the pile. The blows of the hammer will preferably bedelivered in quick succession, and a plurality of hammers operatingsimultaneously may if desired be employed.-

The accompanying drawings illustrate this apparatus in several of themethods in which 'it may be employed.

In Figure 1 the hammer is shown working entirely supported-by theseparate support. In Fig. 2 the hammer is supported rom the pile itselfby means of an auxil iary cylinder and piston. In Fig. 3 the hammer isshown supported by a combination of the external support and theauxiliary cylinder and piston resting on the pile.

In Fig. 4 the hammer is shown supported partly by the externalsupportand partly by a sprmg. This spring may be eit er in a position inwhich it supports the hammer from the piles itself, or in a position inwhich case it supports the hammer from the attachment adapted to receiveits blows. With either position or both positions of the spring, thehammer may be used either with or without the externalpull. Fig. 5

represents the hammer carried directly 'on the pile. .This method mayalso be combined with the external support which may be applied to thecasing of the hammer, or to the attachment or. to the pile itself.

Fig. 6 a plurality-of hammers,.in this case so four is shown. Fig. 7 isa sectional plan view indicating the positions of the hammers.

hammer on the anvil o. The hammer on hammers'd (2 may be operated by the.action of steam or compressed air on a piston e in a cylinder f.Distance pieces g. are

shown keepingthe cylinder at such adis-' tance from the anvil c as willinsure the hammer operating through its normal stroke. The separatesupport for the hammen is represented by the chain and rods k h on whicha crane may be employed to a represents the pile and b the attachmentthereto adapted to receive theblows of the'i 85 In Fig.

I 6 the hammers are supported on s rings k k which in turn rest upon theattac ment Z Z, to the pile a.

The hammer conjunction with the withdrawing means usually employed willbe found to greatly assist such means in withdrawing the pile.

What we claim and desire to secure by Letters Patent of the UnitedStates is 1. In apparatus for withdrawing piles and the like, an anvil,means for attaching the same to the pile, a hammer and means foroperating the same to strike the anvil in the proper directionsubstantially as described.

'2. In apparatus for withdrawing piles and the like the combination withthe ordinary withdrawing means, of an anvil ator hammers when used in'tached to the pile and a vibrating hammeractuated to strike the anvil inthe proper direction substantially as described.

means for attaching

